The actinias in the aquarium are beautiful.

She is second-acting in the play.

The actiniae in the aquarium are beautiful and colorful.

He was acting the goat at the party.

Actinidiolide is a natural compound found in kiwifruit.

Actinistians are ancient fish that have lobed fins.

The actiniarian is a fascinating creature found in the depths of the ocean.

Actiniarians are fascinating creatures found in the ocean.

Actinase is a protease that hydrolyses actins.

The double-acting hydraulic cylinder applies power in two directions.